1 /* $OpenBSD: ssl3.h,v 1.40 2015/07/18 19:41:54 doug Exp $ */ 2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 /* ==================================================================== 59 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111 /* ==================================================================== 112 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 113 * ECC cipher suite support in OpenSSL originally developed by 114 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. 115 */ 116 117 #ifndef HEADER_SSL3_H 118 #define HEADER_SSL3_H 119 120 #include <openssl/buffer.h> 121 #include <openssl/evp.h> 122 #include <openssl/ssl.h> 123 124 #ifdef __cplusplus 125 extern "C" { 126 #endif 127 128 /* TLS_EMPTY_RENEGOTIATION_INFO_SCSV from RFC 5746. */ 129 #define SSL3_CK_SCSV 0x030000FF 130 131 /* TLS_FALLBACK_SCSV from draft-ietf-tls-downgrade-scsv-03. */ 132 #define SSL3_CK_FALLBACK_SCSV 0x03005600 133 134 #define SSL3_CK_RSA_NULL_MD5 0x03000001 135 #define SSL3_CK_RSA_NULL_SHA 0x03000002 136 #define SSL3_CK_RSA_RC4_40_MD5 0x03000003 137 #define SSL3_CK_RSA_RC4_128_MD5 0x03000004 138 #define SSL3_CK_RSA_RC4_128_SHA 0x03000005 139 #define SSL3_CK_RSA_RC2_40_MD5 0x03000006 140 #define SSL3_CK_RSA_IDEA_128_SHA 0x03000007 141 #define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008 142 #define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009 143 #define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A 144 145 #define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B 146 #define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C 147 #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D 148 #define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E 149 #define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F 150 #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010 151 152 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011 153 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012 154 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013 155 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014 156 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015 157 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016 158 159 #define SSL3_CK_ADH_RC4_40_MD5 0x03000017 160 #define SSL3_CK_ADH_RC4_128_MD5 0x03000018 161 #define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019 162 #define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A 163 #define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B 164 165 /* VRS Additional Kerberos5 entries 166 */ 167 #define SSL3_CK_KRB5_DES_64_CBC_SHA 0x0300001E 168 #define SSL3_CK_KRB5_DES_192_CBC3_SHA 0x0300001F 169 #define SSL3_CK_KRB5_RC4_128_SHA 0x03000020 170 #define SSL3_CK_KRB5_IDEA_128_CBC_SHA 0x03000021 171 #define SSL3_CK_KRB5_DES_64_CBC_MD5 0x03000022 172 #define SSL3_CK_KRB5_DES_192_CBC3_MD5 0x03000023 173 #define SSL3_CK_KRB5_RC4_128_MD5 0x03000024 174 #define SSL3_CK_KRB5_IDEA_128_CBC_MD5 0x03000025 175 176 #define SSL3_CK_KRB5_DES_40_CBC_SHA 0x03000026 177 #define SSL3_CK_KRB5_RC2_40_CBC_SHA 0x03000027 178 #define SSL3_CK_KRB5_RC4_40_SHA 0x03000028 179 #define SSL3_CK_KRB5_DES_40_CBC_MD5 0x03000029 180 #define SSL3_CK_KRB5_RC2_40_CBC_MD5 0x0300002A 181 #define SSL3_CK_KRB5_RC4_40_MD5 0x0300002B 182 183 #define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5" 184 #define SSL3_TXT_RSA_NULL_SHA "NULL-SHA" 185 #define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5" 186 #define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5" 187 #define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA" 188 #define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5" 189 #define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA" 190 #define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA" 191 #define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA" 192 #define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA" 193 194 #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA" 195 #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA" 196 #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA" 197 #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA" 198 #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA" 199 #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA" 200 201 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA" 202 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA" 203 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA" 204 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA" 205 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA" 206 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA" 207 208 #define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5" 209 #define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5" 210 #define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA" 211 #define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA" 212 #define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA" 213 214 #define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA" 215 #define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA" 216 #define SSL3_TXT_KRB5_RC4_128_SHA "KRB5-RC4-SHA" 217 #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA "KRB5-IDEA-CBC-SHA" 218 #define SSL3_TXT_KRB5_DES_64_CBC_MD5 "KRB5-DES-CBC-MD5" 219 #define SSL3_TXT_KRB5_DES_192_CBC3_MD5 "KRB5-DES-CBC3-MD5" 220 #define SSL3_TXT_KRB5_RC4_128_MD5 "KRB5-RC4-MD5" 221 #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 "KRB5-IDEA-CBC-MD5" 222 223 #define SSL3_TXT_KRB5_DES_40_CBC_SHA "EXP-KRB5-DES-CBC-SHA" 224 #define SSL3_TXT_KRB5_RC2_40_CBC_SHA "EXP-KRB5-RC2-CBC-SHA" 225 #define SSL3_TXT_KRB5_RC4_40_SHA "EXP-KRB5-RC4-SHA" 226 #define SSL3_TXT_KRB5_DES_40_CBC_MD5 "EXP-KRB5-DES-CBC-MD5" 227 #define SSL3_TXT_KRB5_RC2_40_CBC_MD5 "EXP-KRB5-RC2-CBC-MD5" 228 #define SSL3_TXT_KRB5_RC4_40_MD5 "EXP-KRB5-RC4-MD5" 229 230 #define SSL3_SSL_SESSION_ID_LENGTH 32 231 #define SSL3_MAX_SSL_SESSION_ID_LENGTH 32 232 233 #define SSL3_MASTER_SECRET_SIZE 48 234 #define SSL3_RANDOM_SIZE 32 235 #define SSL3_SEQUENCE_SIZE 8 236 #define SSL3_SESSION_ID_SIZE 32 237 #define SSL3_CIPHER_VALUE_SIZE 2 238 239 #define SSL3_RT_HEADER_LENGTH 5 240 #define SSL3_HM_HEADER_LENGTH 4 241 242 #define SSL3_ALIGN_PAYLOAD 8 243 244 /* This is the maximum MAC (digest) size used by the SSL library. 245 * Currently maximum of 20 is used by SHA1, but we reserve for 246 * future extension for 512-bit hashes. 247 */ 248 249 #define SSL3_RT_MAX_MD_SIZE 64 250 251 /* Maximum block size used in all ciphersuites. Currently 16 for AES. 252 */ 253 254 #define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16 255 256 #define SSL3_RT_MAX_EXTRA (16384) 257 258 /* Maximum plaintext length: defined by SSL/TLS standards */ 259 #define SSL3_RT_MAX_PLAIN_LENGTH 16384 260 /* Maximum compression overhead: defined by SSL/TLS standards */ 261 #define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024 262 263 /* The standards give a maximum encryption overhead of 1024 bytes. 264 * In practice the value is lower than this. The overhead is the maximum 265 * number of padding bytes (256) plus the mac size. 266 */ 267 #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE) 268 269 /* OpenSSL currently only uses a padding length of at most one block so 270 * the send overhead is smaller. 271 */ 272 273 #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \ 274 (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE) 275 276 /* If compression isn't used don't include the compression overhead */ 277 #define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH 278 #define SSL3_RT_MAX_ENCRYPTED_LENGTH \ 279 (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH) 280 #define SSL3_RT_MAX_PACKET_SIZE \ 281 (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH) 282 283 #define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54" 284 #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52" 285 286 #define SSL3_VERSION 0x0300 287 #define SSL3_VERSION_MAJOR 0x03 288 #define SSL3_VERSION_MINOR 0x00 289 290 #define SSL3_RT_CHANGE_CIPHER_SPEC 20 291 #define SSL3_RT_ALERT 21 292 #define SSL3_RT_HANDSHAKE 22 293 #define SSL3_RT_APPLICATION_DATA 23 294 #define TLS1_RT_HEARTBEAT 24 295 296 #define SSL3_AL_WARNING 1 297 #define SSL3_AL_FATAL 2 298 299 #define SSL3_AD_CLOSE_NOTIFY 0 300 #define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */ 301 #define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */ 302 #define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */ 303 #define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */ 304 #define SSL3_AD_NO_CERTIFICATE 41 305 #define SSL3_AD_BAD_CERTIFICATE 42 306 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43 307 #define SSL3_AD_CERTIFICATE_REVOKED 44 308 #define SSL3_AD_CERTIFICATE_EXPIRED 45 309 #define SSL3_AD_CERTIFICATE_UNKNOWN 46 310 #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */ 311 312 #define TLS1_HB_REQUEST 1 313 #define TLS1_HB_RESPONSE 2 314 315 #ifndef OPENSSL_NO_SSL_INTERN 316 317 typedef struct ssl3_record_st { 318 /*r */ int type; /* type of record */ 319 /*rw*/ unsigned int length; /* How many bytes available */ 320 /*r */ unsigned int off; /* read/write offset into 'buf' */ 321 /*rw*/ unsigned char *data; /* pointer to the record data */ 322 /*rw*/ unsigned char *input; /* where the decode bytes are */ 323 /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */ 324 /*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ 325 } SSL3_RECORD; 326 327 typedef struct ssl3_buffer_st { 328 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, 329 * see ssl3_setup_buffers() */ 330 size_t len; /* buffer size */ 331 int offset; /* where to 'copy from' */ 332 int left; /* how many bytes left */ 333 } SSL3_BUFFER; 334 335 #endif 336 337 #define SSL3_CT_RSA_SIGN 1 338 #define SSL3_CT_DSS_SIGN 2 339 #define SSL3_CT_RSA_FIXED_DH 3 340 #define SSL3_CT_DSS_FIXED_DH 4 341 #define SSL3_CT_RSA_EPHEMERAL_DH 5 342 #define SSL3_CT_DSS_EPHEMERAL_DH 6 343 #define SSL3_CT_FORTEZZA_DMS 20 344 /* SSL3_CT_NUMBER is used to size arrays and it must be large 345 * enough to contain all of the cert types defined either for 346 * SSLv3 and TLSv1. 347 */ 348 #define SSL3_CT_NUMBER 11 349 350 351 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001 352 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002 353 #define SSL3_FLAGS_POP_BUFFER 0x0004 354 #define TLS1_FLAGS_TLS_PADDING_BUG 0x0 355 #define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010 356 #define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020 357 #define SSL3_FLAGS_CCS_OK 0x0080 358 359 #ifndef OPENSSL_NO_SSL_INTERN 360 361 typedef struct ssl3_state_st { 362 long flags; 363 int delay_buf_pop_ret; 364 365 unsigned char read_sequence[SSL3_SEQUENCE_SIZE]; 366 int read_mac_secret_size; 367 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 368 unsigned char write_sequence[SSL3_SEQUENCE_SIZE]; 369 int write_mac_secret_size; 370 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 371 372 unsigned char server_random[SSL3_RANDOM_SIZE]; 373 unsigned char client_random[SSL3_RANDOM_SIZE]; 374 375 /* flags for countermeasure against known-IV weakness */ 376 int need_empty_fragments; 377 int empty_fragment_done; 378 379 SSL3_BUFFER rbuf; /* read IO goes into here */ 380 SSL3_BUFFER wbuf; /* write IO goes into here */ 381 382 SSL3_RECORD rrec; /* each decoded record goes in here */ 383 SSL3_RECORD wrec; /* goes out from here */ 384 385 /* storage for Alert/Handshake protocol data received but not 386 * yet processed by ssl3_read_bytes: */ 387 unsigned char alert_fragment[2]; 388 unsigned int alert_fragment_len; 389 unsigned char handshake_fragment[4]; 390 unsigned int handshake_fragment_len; 391 392 /* partial write - check the numbers match */ 393 unsigned int wnum; /* number of bytes sent so far */ 394 int wpend_tot; /* number bytes written */ 395 int wpend_type; 396 int wpend_ret; /* number of bytes submitted */ 397 const unsigned char *wpend_buf; 398 399 /* used during startup, digest all incoming/outgoing packets */ 400 BIO *handshake_buffer; 401 /* When set of handshake digests is determined, buffer is hashed 402 * and freed and MD_CTX-es for all required digests are stored in 403 * this array */ 404 EVP_MD_CTX **handshake_dgst; 405 /* this is set whenerver we see a change_cipher_spec message 406 * come in when we are not looking for one */ 407 int change_cipher_spec; 408 409 int warn_alert; 410 int fatal_alert; 411 /* we allow one fatal and one warning alert to be outstanding, 412 * send close alert via the warning alert */ 413 int alert_dispatch; 414 unsigned char send_alert[2]; 415 416 /* This flag is set when we should renegotiate ASAP, basically when 417 * there is no more data in the read or write buffers */ 418 int renegotiate; 419 int total_renegotiations; 420 int num_renegotiations; 421 422 int in_read_app_data; 423 424 struct { 425 /* actually only needs to be 16+20 */ 426 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; 427 428 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 429 unsigned char finish_md[EVP_MAX_MD_SIZE*2]; 430 int finish_md_len; 431 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; 432 int peer_finish_md_len; 433 434 unsigned long message_size; 435 int message_type; 436 437 /* used to hold the new cipher we are going to use */ 438 const SSL_CIPHER *new_cipher; 439 DH *dh; 440 441 EC_KEY *ecdh; /* holds short lived ECDH key */ 442 443 /* used when SSL_ST_FLUSH_DATA is entered */ 444 int next_state; 445 446 int reuse_message; 447 448 /* used for certificate requests */ 449 int cert_req; 450 int ctype_num; 451 char ctype[SSL3_CT_NUMBER]; 452 STACK_OF(X509_NAME) *ca_names; 453 454 int key_block_length; 455 unsigned char *key_block; 456 457 const EVP_CIPHER *new_sym_enc; 458 const EVP_AEAD *new_aead; 459 const EVP_MD *new_hash; 460 int new_mac_pkey_type; 461 int new_mac_secret_size; 462 int cert_request; 463 } tmp; 464 465 /* Connection binding to prevent renegotiation attacks */ 466 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 467 unsigned char previous_client_finished_len; 468 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 469 unsigned char previous_server_finished_len; 470 int send_connection_binding; /* TODOEKR */ 471 472 /* Set if we saw the Next Protocol Negotiation extension from our peer. 473 */ 474 int next_proto_neg_seen; 475 476 /* 477 * ALPN information 478 * (we are in the process of transitioning from NPN to ALPN). 479 */ 480 481 /* 482 * In a server these point to the selected ALPN protocol after the 483 * ClientHello has been processed. In a client these contain the 484 * protocol that the server selected once the ServerHello has been 485 * processed. 486 */ 487 unsigned char *alpn_selected; 488 unsigned int alpn_selected_len; 489 } SSL3_STATE; 490 491 #endif 492 493 /* SSLv3 */ 494 /*client */ 495 /* extra state */ 496 #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT) 497 /* write to server */ 498 #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT) 499 #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT) 500 /* read from server */ 501 #define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT) 502 #define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT) 503 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT) 504 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT) 505 #define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT) 506 #define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT) 507 #define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT) 508 #define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT) 509 #define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT) 510 #define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT) 511 #define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT) 512 #define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT) 513 /* write to server */ 514 #define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT) 515 #define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT) 516 #define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT) 517 #define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT) 518 #define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT) 519 #define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT) 520 #define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT) 521 #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT) 522 #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT) 523 #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT) 524 #define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT) 525 #define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT) 526 #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT) 527 #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT) 528 /* read from server */ 529 #define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT) 530 #define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT) 531 #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT) 532 #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT) 533 #define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT) 534 #define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT) 535 #define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT) 536 #define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT) 537 538 /* server */ 539 /* extra state */ 540 #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT) 541 /* read from client */ 542 /* Do not change the number values, they do matter */ 543 #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT) 544 #define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT) 545 #define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT) 546 /* write to client */ 547 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT) 548 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT) 549 #define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT) 550 #define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT) 551 #define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT) 552 #define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT) 553 #define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT) 554 #define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT) 555 #define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT) 556 #define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT) 557 #define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT) 558 #define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT) 559 #define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT) 560 #define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT) 561 #define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT) 562 /* read from client */ 563 #define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT) 564 #define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT) 565 #define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT) 566 #define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT) 567 #define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT) 568 #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT) 569 #define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT) 570 #define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT) 571 #define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT) 572 #define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT) 573 #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT) 574 #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT) 575 /* write to client */ 576 #define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT) 577 #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT) 578 #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT) 579 #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT) 580 #define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT) 581 #define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT) 582 #define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT) 583 #define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT) 584 585 #define SSL3_MT_HELLO_REQUEST 0 586 #define SSL3_MT_CLIENT_HELLO 1 587 #define SSL3_MT_SERVER_HELLO 2 588 #define SSL3_MT_NEWSESSION_TICKET 4 589 #define SSL3_MT_CERTIFICATE 11 590 #define SSL3_MT_SERVER_KEY_EXCHANGE 12 591 #define SSL3_MT_CERTIFICATE_REQUEST 13 592 #define SSL3_MT_SERVER_DONE 14 593 #define SSL3_MT_CERTIFICATE_VERIFY 15 594 #define SSL3_MT_CLIENT_KEY_EXCHANGE 16 595 #define SSL3_MT_FINISHED 20 596 #define SSL3_MT_CERTIFICATE_STATUS 22 597 598 #define SSL3_MT_NEXT_PROTO 67 599 600 #define DTLS1_MT_HELLO_VERIFY_REQUEST 3 601 602 #define SSL3_MT_CCS 1 603 604 /* These are used when changing over to a new cipher */ 605 #define SSL3_CC_READ 0x01 606 #define SSL3_CC_WRITE 0x02 607 #define SSL3_CC_CLIENT 0x10 608 #define SSL3_CC_SERVER 0x20 609 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE) 610 #define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ) 611 #define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ) 612 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE) 613 614 #ifdef __cplusplus 615 } 616 #endif 617 #endif 618